56724401 has 2 divisors, whose sum is σ = 56724402. Its totient is φ = 56724400.

The previous prime is 56724397. The next prime is 56724403. The reversal of 56724401 is 10442765.

56724401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35343025 + 21381376 = 5945^2 + 4624^2 .

It is a cyclic number.

It is not a de Polignac number, because 56724401 - 2² = 56724397 is a prime.

Together with 56724403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56724403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28362200 + 28362201.

It is an arithmetic number, because the mean of its divisors is an integer number (28362201).

Almost surely, 2^56724401 is an apocalyptic number.

It is an amenable number.

56724401 is a deficient number, since it is larger than the sum of its proper divisors (1).

56724401 is an equidigital number, since it uses as much as digits as its factorization.

56724401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 56724401 is about 7531.5603297059. The cubic root of 56724401 is about 384.2288516670.

The spelling of 56724401 in words is "fifty-six million, seven hundred twenty-four thousand, four hundred one".